SERVICE FOR INTERNATIONAL SCIENTIFIC COMMUNITIES:
Local Organization Committee for the Joint International Meeting of 8th CACGP Symposium and 2nd IGAC Conference, Fuji-Yoshida, Japan (1994)
Nomination Committee of American Geophysical Union (1995-1998)
Member of IAMAS Commission on Atmospheric Chemistry and Global Pollution (CACGP) (1998-2006)
Vice President of CACGP (2006-2010)
Member of PASC (Polar Atmospheric and Snow Chemistry) of IGAC (International Global Atmospheric Chemistry Program) (1994-1998)
Science Steering Committee of International ACE-Asia Committee (1998-2001)
International Union of Pure and Applied Chemistry (IUPAC), Commission on Atmospheric Chemistry (VI.2) Associate Member (1998-2000)
International Union of Pure and Applied Chemistry (IUPAC) Fellow (2001-2004)
12th Goldschmidt Conference, Davos, Switzerland, August, 2002, International Program Committee and Session Co-Convener
13th Goldschmidt Conference, Kurashiki, Japan, September 2003, Organizing Committee, International Program Committee and Session Co-Convener
15th Goldschmidt Conference, Moscow, Idaho, USA, May 2005, Organizing Committee, International Program Committee and Session Co-Convener
Global Atmospheric Chemistry Conference 2006, Cape Town, South Africa, September 2006, Session Co-Convener